This question would be better posted over in the Armor forum. But as a direct answer, I suggest looking at Barrel Depot or Jordio Rubio product lines offhand. I don't know for a fact if either company makes the particular barrel that you are looking for, but I do know that they have large selection and and just might have it.
F is for FIRE, That burns down the whole town!
U is for URANIUM... BOMBS!
N is for NO SURVIVORS...
- Plankton
LSM